Scaling - Atoti Hub

Atoti Market Risk provides scaling simulations to display instant recalculations of and incremental impact on VaR/ES and sensitivities from simulated adjustments to a given trade or set of trades.

Scaling factor options

You can select an existing trade and modify its size to measure the impact of increasing or partially or completely closing down a position.

Scaling factor	Impact on trade
> 1	Adjusts the trade up
< 1	Adjusts the trade down
negative	Inverts the trade risk profile
zero (0)	Closes down the position entirely

Vector scaling

Select the TradeId you want to work on. This can be from any pivot table that has the TradeId dimension. Right-click and select What-If. The Create WhatIf dialog box is displayed with information about the TradeId. Check that all elements are the ones you want, otherwise cancel and set or change your filters as required.
Select the type of scaling you want to apply:

Select Scaling type	Enter a value
PnL Scaling	The factor by which you want to multiply the underlying PnL vectors
PnL Addon	The amount you want to add to the underlying PnL vectors

Set a name for the branch where the system saves the result of the scaling. If the branch does not exist a new branch will be created.
Click OK. In the Pivot table, if the Epoch dimension is selected, the new branch you created is displayed adjacent to the master. The new branch contains the same data as the master branch except for the selected trade, which is adjusted by the scaling you applied. To manage your branches and the simulations on them, use the What-If Manager.

Scenario scaling

Select the TradeId(s) you want to work on. This can be from any pivot table that has the TradeId dimension. Right-click and select What-If
Select the type of scaling you want to apply:

Select Scaling type	Enter a value
PnL Scenario Scaling	The factor by which you want to multiply the underlying PnL vectors
PnL Scenario Addon	The amount you want to add to the underlying PnL vectors

Set a name for the branch where the system saves the result of the scaling. If the branch does not exist a new branch will be created.
Click OK. In the Pivot table, if the Epoch dimension is selected, the new branch you created is displayed adjacent to the master. The new branch contains the same data as the master branch except for the selected trade which is adjusted by the scaling you applied. To manage your branches and the simulations on them, use the What-If Manager.

Example

The animation demonstrates how to create a what-if for PnL Scaling

​Scaling factor options

​Vector scaling

​Scenario scaling

​Example

Scaling factor options

Vector scaling

Scenario scaling

Example